[HBASE-13008] Better default for hbase.regionserver.regionSplitLimit parameter.

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.0.0, 1.1.0, 0.98.11
• Hadoop Flags: Reviewed

Release Note

The configuration parameter "hbase.regionserver.regionSplitLimit", the number of regions a regionserver can open before splitting on the server is stopped to limit further region count growth, was lowered from Integer.MAX_VALUE (2147483647) to a much more reasonable 1000, and documented in hbase-defaults.xml.

• Assignee: Srikanth Srungarapu
• Reporter: Srikanth Srungarapu
• Created: 10/Feb/15 23:42
• Updated: 06/Apr/18 17:54
• Resolved: 12/Feb/15 19:04

Description

Currently, the default value for hbase.regionserver.regionSplitLimit is 2147483647. Couple of customers ran into trouble, as they ended up with too many regions(~7k) running on their region servers. Would it be possible for us to come up with better default or at least some new guard rail, which can be used for logging warnings when the number of regions are going overboard?

Ref:
[1] https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/CompactSplitThread.java#L101